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Diffstat (limited to 'src/inputPlugins/mp3_plugin.c')
-rw-r--r--src/inputPlugins/mp3_plugin.c224
1 files changed, 122 insertions, 102 deletions
diff --git a/src/inputPlugins/mp3_plugin.c b/src/inputPlugins/mp3_plugin.c
index 33087e134..471a173a1 100644
--- a/src/inputPlugins/mp3_plugin.c
+++ b/src/inputPlugins/mp3_plugin.c
@@ -53,8 +53,8 @@
#define DECODE_CONT -1
#define DECODE_OK 0
-#define MUTEFRAME_SKIP 1
-#define MUTEFRAME_SEEK 2
+#define MUTEFRAME_SKIP 1
+#define MUTEFRAME_SEEK 2
/* this is stolen from mpg321! */
struct audio_dither {
@@ -74,7 +74,7 @@ signed long audio_linear_dither(unsigned int bits, mad_fixed_t sample, struct au
MIN = -MAD_F_ONE,
MAX = MAD_F_ONE - 1
};
-
+
sample += dither->error[0] - dither->error[1] + dither->error[2];
dither->error[2] = dither->error[1];
@@ -97,7 +97,7 @@ signed long audio_linear_dither(unsigned int bits, mad_fixed_t sample, struct au
sample = MAX;
}
else if (output < MIN) {
- output = MIN;
+ output = MIN;
if (sample < MIN)
sample = MIN;
@@ -148,11 +148,11 @@ void initMp3DecodeData(mp3DecodeData * data, InputStream * inStream) {
data->times = NULL;
data->currentFrame = 0;
data->flush = 1;
- data->inStream = inStream;
+ data->inStream = inStream;
memset(&(data->dither), 0, sizeof(struct audio_dither));
mad_stream_init(&data->stream);
- data->stream.options |= MAD_OPTION_IGNORECRC;
+ data->stream.options |= MAD_OPTION_IGNORECRC;
mad_frame_init(&data->frame);
mad_synth_init(&data->synth);
mad_timer_reset(&data->timer);
@@ -160,8 +160,8 @@ void initMp3DecodeData(mp3DecodeData * data, InputStream * inStream) {
int seekMp3InputBuffer(mp3DecodeData * data, long offset) {
if(seekInputStream(data->inStream,offset,SEEK_SET) < 0) {
- return -1;
- }
+ return -1;
+ }
mad_stream_buffer(&data->stream,data->readBuffer,0);
(data->stream).error = 0;
@@ -172,7 +172,7 @@ int seekMp3InputBuffer(mp3DecodeData * data, long offset) {
int fillMp3InputBuffer(mp3DecodeData * data) {
size_t readSize;
size_t remaining;
- size_t readed;
+ size_t readed;
unsigned char * readStart;
if((data->stream).next_frame!=NULL) {
@@ -354,57 +354,57 @@ int decodeNextFrame(mp3DecodeData * data) {
# define XING_MAGIC (('X' << 24) | ('i' << 16) | ('n' << 8) | 'g')
struct xing {
- long flags; /* valid fields (see below) */
- unsigned long frames; /* total number of frames */
- unsigned long bytes; /* total number of bytes */
- unsigned char toc[100]; /* 100-point seek table */
- long scale; /* ?? */
+ long flags; /* valid fields (see below) */
+ unsigned long frames; /* total number of frames */
+ unsigned long bytes; /* total number of bytes */
+ unsigned char toc[100]; /* 100-point seek table */
+ long scale; /* ?? */
};
enum {
- XING_FRAMES = 0x00000001L,
- XING_BYTES = 0x00000002L,
- XING_TOC = 0x00000004L,
- XING_SCALE = 0x00000008L
+ XING_FRAMES = 0x00000001L,
+ XING_BYTES = 0x00000002L,
+ XING_TOC = 0x00000004L,
+ XING_SCALE = 0x00000008L
};
int parse_xing(struct xing *xing, struct mad_bitptr ptr, unsigned int bitlen)
{
- if (bitlen < 64 || mad_bit_read(&ptr, 32) != XING_MAGIC) goto fail;
-
- xing->flags = mad_bit_read(&ptr, 32);
- bitlen -= 64;
-
- if (xing->flags & XING_FRAMES) {
- if (bitlen < 32) goto fail;
- xing->frames = mad_bit_read(&ptr, 32);
- bitlen -= 32;
- }
-
- if (xing->flags & XING_BYTES) {
- if (bitlen < 32) goto fail;
- xing->bytes = mad_bit_read(&ptr, 32);
- bitlen -= 32;
- }
-
- if (xing->flags & XING_TOC) {
- int i;
- if (bitlen < 800) goto fail;
- for (i = 0; i < 100; ++i) xing->toc[i] = mad_bit_read(&ptr, 8);
- bitlen -= 800;
- }
-
- if (xing->flags & XING_SCALE) {
- if (bitlen < 32) goto fail;
- xing->scale = mad_bit_read(&ptr, 32);
- bitlen -= 32;
- }
+ if (bitlen < 64 || mad_bit_read(&ptr, 32) != XING_MAGIC) goto fail;
+
+ xing->flags = mad_bit_read(&ptr, 32);
+ bitlen -= 64;
+
+ if (xing->flags & XING_FRAMES) {
+ if (bitlen < 32) goto fail;
+ xing->frames = mad_bit_read(&ptr, 32);
+ bitlen -= 32;
+ }
+
+ if (xing->flags & XING_BYTES) {
+ if (bitlen < 32) goto fail;
+ xing->bytes = mad_bit_read(&ptr, 32);
+ bitlen -= 32;
+ }
+
+ if (xing->flags & XING_TOC) {
+ int i;
+ if (bitlen < 800) goto fail;
+ for (i = 0; i < 100; ++i) xing->toc[i] = mad_bit_read(&ptr, 8);
+ bitlen -= 800;
+ }
+
+ if (xing->flags & XING_SCALE) {
+ if (bitlen < 32) goto fail;
+ xing->scale = mad_bit_read(&ptr, 32);
+ bitlen -= 32;
+ }
return 1;
fail:
- xing->flags = 0;
- return 0;
+ xing->flags = 0;
+ return 0;
}
int decodeFirstFrame(mp3DecodeData * data, DecoderControl * dc,
@@ -479,11 +479,11 @@ void mp3DecodeDataFinalize(mp3DecodeData * data) {
/* this is primarily used for getting total time for tags */
int getMp3TotalTime(char * file) {
- InputStream inStream;
+ InputStream inStream;
mp3DecodeData data;
int ret;
- if(openInputStream(&inStream, file) < 0) return -1;
+ if(openInputStream(&inStream, file) < 0) return -1;
initMp3DecodeData(&data,&inStream);
if(decodeFirstFrame(&data, NULL, NULL)<0) ret = -1;
else ret = data.totalTime+0.5;
@@ -536,18 +536,18 @@ int mp3Read(mp3DecodeData * data, OutputBuffer * cb, DecoderControl * dc) {
data->elapsedTime = ((float)mad_timer_count(data->timer,MAD_UNITS_MILLISECONDS))/1000;
switch(data->muteFrame) {
- case MUTEFRAME_SKIP:
+ case MUTEFRAME_SKIP:
data->muteFrame = 0;
- break;
- case MUTEFRAME_SEEK:
+ break;
+ case MUTEFRAME_SEEK:
if(dc->seekWhere<=data->elapsedTime) {
- data->outputPtr = data->outputBuffer;
- clearOutputBuffer(cb);
+ data->outputPtr = data->outputBuffer;
+ clearOutputBuffer(cb);
data->muteFrame = 0;
dc->seek = 0;
}
- break;
- default:
+ break;
+ default:
mad_synth_frame(&data->synth,&data->frame);
if(data->inStream->metaTitle) {
@@ -566,8 +566,8 @@ int mp3Read(mp3DecodeData * data, OutputBuffer * cb, DecoderControl * dc) {
}
for(i=0;i<(data->synth).pcm.length;i++) {
+#ifdef MPD_FIXED_POINT
mpd_sint16 * sample;
-
sample = (mpd_sint16 *)data->outputPtr;
*sample = (mpd_sint16) audio_linear_dither(16,
(data->synth).pcm.samples[0][i],
@@ -581,27 +581,41 @@ int mp3Read(mp3DecodeData * data, OutputBuffer * cb, DecoderControl * dc) {
&(data->dither));
data->outputPtr+=2;
}
+#else
+ mpd_float32 * sample;
+ sample = (mpd_float32 *)data->outputPtr;
+ *sample = (mpd_float32) mad_f_todouble(
+ (data->synth).pcm.samples[0][i]);
+ data->outputPtr+=4;
+
+ if(MAD_NCHANNELS(&(data->frame).header)==2) {
+ sample = (mpd_sint16 *)data->outputPtr;
+ *sample = (mpd_float32) mad_f_todouble(
+ (data->synth).pcm.samples[0][i]);
+ data->outputPtr+=4;
+ }
+#endif
if(data->outputPtr>=data->outputBufferEnd) {
- long ret;
- ret = sendDataToOutputBuffer(cb,
- data->inStream,
- dc,
- data->inStream->seekable,
- data->outputBuffer,
- data->outputPtr-
+ long ret;
+ ret = sendDataToOutputBuffer(cb,
+ data->inStream,
+ dc,
+ data->inStream->seekable,
data->outputBuffer,
- data->elapsedTime,
- data->bitRate/1000,
+ data->outputPtr-
+ data->outputBuffer,
+ data->elapsedTime,
+ data->bitRate/1000,
NULL);
- if(ret == OUTPUT_BUFFER_DC_STOP) {
+ if(ret == OUTPUT_BUFFER_DC_STOP) {
data->flush = 0;
- return DECODE_BREAK;
- }
+ return DECODE_BREAK;
+ }
- data->outputPtr = data->outputBuffer;
+ data->outputPtr = data->outputBuffer;
- if(ret == OUTPUT_BUFFER_DC_SEEK) break;
+ if(ret == OUTPUT_BUFFER_DC_SEEK) break;
}
}
@@ -617,20 +631,20 @@ int mp3Read(mp3DecodeData * data, OutputBuffer * cb, DecoderControl * dc) {
if(i<data->highestFrame) {
if(seekMp3InputBuffer(data,
data->frameOffset[i]) == 0)
- {
- data->outputPtr = data->outputBuffer;
- clearOutputBuffer(cb);
- data->currentFrame = i;
- }
- else dc->seekError = 1;
+ {
+ data->outputPtr = data->outputBuffer;
+ clearOutputBuffer(cb);
+ data->currentFrame = i;
+ }
+ else dc->seekError = 1;
data->muteFrame = 0;
dc->seek = 0;
}
}
- else if(dc->seek && !data->inStream->seekable) {
- dc->seek = 0;
- dc->seekError = 1;
- }
+ else if(dc->seek && !data->inStream->seekable) {
+ dc->seek = 0;
+ dc->seekError = 1;
+ }
}
while(1) {
@@ -653,7 +667,13 @@ int mp3Read(mp3DecodeData * data, OutputBuffer * cb, DecoderControl * dc) {
}
void initAudioFormatFromMp3DecodeData(mp3DecodeData * data, AudioFormat * af) {
+#ifdef MPD_FIXED_POINT
af->bits = 16;
+ af->floatSamples = 0;
+#else
+ af->bits = 32;
+ af->floatSamples = 1;
+#endif
af->sampleRate = (data->frame).header.samplerate;
af->channels = MAD_NCHANNELS(&(data->frame).header);
}
@@ -665,19 +685,19 @@ int mp3_decode(OutputBuffer * cb, DecoderControl * dc, InputStream * inStream) {
if(openMp3FromInputStream(inStream, &data, dc, &tag) < 0) {
closeInputStream(inStream);
if(!dc->stop) {
- ERROR("Input does not appear to be a mp3 bit stream.\n");
- return -1;
- }
- else {
- dc->state = DECODE_STATE_STOP;
- dc->stop = 0;
- }
- return 0;
+ ERROR("Input does not appear to be a mp3 bit stream.\n");
+ return -1;
+ }
+ else {
+ dc->state = DECODE_STATE_STOP;
+ dc->stop = 0;
+ }
+ return 0;
}
initAudioFormatFromMp3DecodeData(&data, &(dc->audioFormat));
- getOutputAudioFormat(&(dc->audioFormat), &(cb->audioFormat));
-
+ getInternalAudioFormat(&(dc->audioFormat), &(cb->audioFormat));
+
dc->totalTime = data.totalTime;
if(inStream->metaTitle) {
@@ -716,21 +736,21 @@ int mp3_decode(OutputBuffer * cb, DecoderControl * dc, InputStream * inStream) {
while(mp3Read(&data,cb,dc)!=DECODE_BREAK);
/* send last little bit if not dc->stop */
- if(!dc->stop && data.outputPtr!=data.outputBuffer && data.flush) {
- sendDataToOutputBuffer(cb, NULL, dc,
- data.inStream->seekable,
- data.outputBuffer,
- data.outputPtr-data.outputBuffer,
- data.elapsedTime,data.bitRate/1000,
+ if(!dc->stop && data.outputPtr!=data.outputBuffer && data.flush) {
+ sendDataToOutputBuffer(cb, NULL, dc,
+ data.inStream->seekable,
+ data.outputBuffer,
+ data.outputPtr-data.outputBuffer,
+ data.elapsedTime,data.bitRate/1000,
NULL);
}
closeInputStream(inStream);
if(dc->seek && data.muteFrame == MUTEFRAME_SEEK) {
- clearOutputBuffer(cb);
- dc->seek = 0;
- }
+ clearOutputBuffer(cb);
+ dc->seek = 0;
+ }
flushOutputBuffer(cb);
mp3DecodeDataFinalize(&data);
generated by cgit v1.2.3 (git 2.25.1) at 2024-12-14 21:32:14 +0000